Răspuns:
Explicație pas cu pas:
1/3 + 1/3 = 2/3
sau 4/3 - 2/3 = 2/3
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20/100 - 6/100 = 14/100
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2/5 + 6/5 = 8/5
4/10 + 6/10 = 10/10
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9/8 + 3/8 = 12/8
1 - 3/4 = 1/4
